How to change keyboard layout xfce

If you run a distro like Sabayon which ships bare-bones Xfce you might wonder:

How to add a keyboard layout on Xfce
How to add a keyboard indicator to Xfce panel
and

How to set a shortcut to switch the layout on Xfce

Install the plugin xfce4-xkb-plugin: (http://goodies.xfce.org/projects/panel-plugins/xfce4-xkb-plugin)
Then add a keyboard indicator to your panel:
Right click on the Xfce panel -> Panel preferences -> Items -> Add (the plus sign) -> Keyboard layouts

Now add a new keyboard layout and configure the switching shortcut:
Right click on the Keyboards layouts -> Properties -> and then configure all that's related to your keyboard (keyboard model, add a new layout, arrange which layout will be first/default, set the options to change the layout, display flags or text, etc.).